We were very happy to stay at Terachai host. The room and house looks beautiful by eyes than the photos on AirBnb.
We have stayed many places near that area before, but Terachai place's the best location for this reasonable price, very close to Terminal 21 and BTS.
He and his housekeeper also helpful, always response very quickly when we need something (such as we forgot the key in room and closed the door or booking the taxi to the Airport at 5 AM and they both need to wake up at that time to support us checking out and keep in touch with taxi service).
Absolutely will recommend for friends or stay when coming back BKK next time.